For the following system, use the second equation to make a substitution for x in the first equation. x + 3y = 5

x + 7 = 2y

What is the resulting equation?

2 y + 7 + 3 y = 5
2 y - 7 + 3 y = 5
2 y + 2 x + 3 y = 5

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

Ihave a triangle with a 60 degree angle. lets use d for that angle. what are the values of e and f if d is 60 degrees? and what do you notice about the values of e and f?